While the most effective way to stop a virus is to maintain physical distancing and proper hand hygiene, the use of face masks can help the person wearing the mask to not spread infected droplets to others and to self-protect them selves from inhaling incoming viral particles from others.
Masks – Chance of Transmission
Currently, in Canada there is no dedicated national industry standard to regulate the safety and performance of medical masks for healthcare professionals or the general public. While the requirements are under development, Health Canada has accepted testing and certification to 42CFR84; ASTM F2100 and other internationally published standards.
LabTest Certification Inc. offers Testing and Certification for Non-Powered Air-Purifying Respirators in accordance with NIOSH 42 CFR 84 test procedures for marking the masks for 95PFE, 99PFE, and 100PFE, as per the internal requirements set by Health Canada.
LabTest also provides testing services to 16 CFR 1610 and ASTM F1862 / F1862M-17 for labelling 95PFE-L#, 99PFE-L# and 100PFE-L# respirators (where # represents the fluid resistance level) and for labelling surgical masks.
For Face Coverings not intended for a health care setting, LabTest is also Testing and Certifying Masks to ASTM-F3520
In the USA, all medical masks for healthcare professionals are certified by The National Institute for Occupational Safety and Heath (NIOSH). LabTest provides Pre-Certification Testing in compliance with NIOSH-42CFR84 for Non-Powered Air-Purifying Respirators, such as N95, N99, and N100.